Yamaha - Probe water sensor only - MAR-10171-30-00 Mercury-250HP-3-4L-V6-2012 The design features a 3mm

The design features a 3mm thick lower wear plate to protect against accidental ramp dragging and a drain hole to allow water and fluids to escape preventing corrosion and freezing

Additionally

And because it’s 100% free of grease-producing silicone oils and petroleum distillates

Width-2-7/8"

Q5: Does it work in saltwater

Yamaha - Probe water sensor only - MAR-10171-30-00 Mercury-250HP-3-4L-V6-2012 The design features a 3mmMAR 10171 30 00 PROBE WATER SENSOR ONLY WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings. ca. gov.